ICP-AES法测定食品中硼砂  

Detection of borax content in food by ICP-AES method

作　　者：胡小玲[1] 黄辉涛 肖学成[1] 

机构地区：[1]广东省珠海市疾病预防控制中心,广东珠海519002

出　　处：《中国卫生检验杂志》2008年第10期1994-1995,共2页Chinese Journal of Health Laboratory Technology

摘　　要：目的：建立电感耦合等离子体发射光谱法（ICP-AES法）测定食品中硼砂含量的方法。方法：用湿式消解法消化样品,ICP-AES法测定食品中硼元素含量,换算成硼砂（以Na2B4O7·10H2O计）的含量。结果：方法线性范围在3个数量级以上,线性良好,相关系数为0.9996;检出限为55.02 mg/kg（以Na2B4O7·10H2O计）;高中低3个不同浓度加标回收率在100.2%～106.0%之间;硼砂含量不同的3个样品分别重复6次测定的相对标准偏差RSD〈8.5%;国家标准方法定性结果与ICP-AES法定量测定结果基本吻合。结论：该方法灵敏、准确、快速并能定量地检测食品中硼砂的含量。Objective：To develop the inductively coupled Plasma-Atomic Emission spectrometry（ICP-AES） assay for determination of the borax content in the food.Methods：The samples were digested by wet digestion.The boron content in the food was analyzed by ICP-AES method.Results：The linear range was good with 0.99996 of the linear correlation.The detection limit of the assay was 55.02 mg/kg（Na2B4O7·10H2O）.The recoveries ranged from 100.2% to 106.0% of three different levels.Relative standard deviation was below 8.5%.Compared with the National Standard Methods（NSM）,the method is consistent with NSM.Conclusion：The ICP-AES method developed was sensitive,accurate,rapid for quantitative detection of borax content in the food.

关 键 词：硼砂 食品 ICP-AES法 

分 类 号：O657.31[理学—分析化学]